.box {
    width: 200px;
    height: 200px;
    padding: 20px;
    border: 5px solid black;
    /* margin: 10px; */
    background-color: red;
    color: white;
    /* margin-top: 10px;
    margin-bottom: 10px;
    margin-left: 8px;
    margin-right: 8px; */
    margin: 10px 8px;
    /* border-bottom-color: green; */
    /* border-bottom-width: 10px; */
    border-bottom: 10px dotted blueviolet;
  }

  .box1 {
    width: 200px;
    height: 200px;
    background-color: green;
  }